White Paper CP971C pH measurement and control in a power utility is anintegral part of process. The scrubber efficiency is highlydependent onthe pH. Numerous opportunities were revealed for saving time, as well asthe cost and materials in power plants. In afossil fuel power plant,thechemical energy stored in coal, oil, natural gas, shale oil, oxygen andairis converted into thermal, mechanical and finally into electricalenergy. Inother words, water is heated to steam, which spins a steam turbine. Thesteam turbine drives an electrical generator.